{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L031K6U6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L031K6U6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L031K6U6","factsUrl":"https://icboms.com/api/mcp/products/STM32L031K6U6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L031K6U6, STM32L0 series, 32-bit ARM Cortex-M0+ MCU, 32 MHz, 32 KB Flash, 8K x 8 SRAM, 1K x 8 EEPROM, 27 I/O, I²C/SPI/UART/LINbus, 10-channel 12-bit ADC, 1.8V-3.6V, -40°C to 85°C, 32-UFQFPN (5x5 mm) exposed pad.","salesMarkdown":"## Memory budget and the EEPROM advantage The 1 KB EEPROM is a differentiator: it allows wear-leveled storage of trim values, calibration constants, or device IDs without wearing out the Flash pages. For a design that needs to retain 100k write cycles on a few bytes, that EEPROM block saves a separate I²C EEPROM and its associated board area. ## Connectivity and analog for sensor-edge designs ## Package and thermal: 32-UFQFPN with exposed pad Housed in a 32-UFQFN exposed-pad package (5x5 mm body), the STM32L031K6U6 suits space-constrained PCBs. For BOM planning, this removes the obsolescence risk that haunts older MCU lines. No immediate allocation concerns, but as with any Cortex-M0+ device in a compact package, lead times can tighten during industry-wide supply cycles.","metaTitle":"STM32L031K6U6 ARM Cortex-M0+ MCU, 32 MHz, 32 KB Flash","metaDescription":"STMicroelectronics STM32L031K6U6 32-bit MCU with ARM Cortex-M0+ core at 32 MHz. 32 KB Flash, 8 KB SRAM, 1 KB EEPROM. Industrial temp -40°C to 85°C.","metaKeywords":null},"attributes":{"series":"STM32L0","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"32MHz","Series":"STM32L0","Package":"Tray","RAM Size":"8K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"1K x 8","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"I²C, IrDA, LINbus, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"27","Core Processor":"ARM® Cortex®-M0+","Package / Case":"32-UFQFN Exposed Pad","Product Status":"Active","Data Converters":"A/D 10x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L031","Program Memory Size":"32KB (32K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"32-UFQFPN (5x5)","Voltage - Supply (Vcc/Vdd)":"1.8V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.1800","priceTiers":[{"qty":1,"price":"$3.18000","currency":"USD"},{"qty":10,"price":"$2.85900","currency":"USD"},{"qty":25,"price":"$2.70280","currency":"USD"},{"qty":80,"price":"$2.34250","currency":"USD"},{"qty":230,"price":"$2.22239","currency":"USD"},{"qty":440,"price":"$1.99416","currency":"USD"},{"qty":945,"price":"$1.68181","currency":"USD"},{"qty":2940,"price":"$1.59772","currency":"USD"},{"qty":5880,"price":"$1.53766","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/9da9efc4233dfdd482528b8b281fc32a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L031K6U6/alternatives.json"},"ai":{"faq":[{"question":"Is STM32L031K6U6 compatible with STM32L031K6T6?","answer":"The STM32L031K6U6 and STM32L031K6T6 share the same core silicon (32 KB Flash, 8 KB SRAM, 1 KB EEPROM, same peripherals) but differ in package: the K6U6 is a 32-UFQFN exposed-pad package, while the K6T6 is typically an LQFP-32. The pin assignments and footprint are not identical — a board designed for one cannot directly accept the other without a layout change. For a drop-in replacement, verify the package compatibility first."},{"question":"How to program STM32L031K6U6?","answer":"The STM32L031K6U6 is programmed via the standard ARM Serial Wire Debug (SWD) interface using a 4-pin connector (SWCLK, SWDIO, VDD, GND). ST's ST-Link/V2 or any CMSIS-DAP probe works. The internal oscillator is enabled by default, so no external clock is needed for initial programming. The bootloader in system memory also supports UART-based programming via the USART1 pins."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L031K6U6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L031K6U6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}